What material is good for the bottom plate of heat treatment furnace?

What material is good for the bottom plate of heat treatment furnace?
Or uneven workpiece placement will affect the deformation of furnace floor. The bottom plate of the furnace shall be observed frequently during use. If deformation is found, it shall be replaced in time to avoid accidents.
Heat resistant steel furnace bottom plate is commonly used in heat treatment furnace. If you want to have a high cost performance ratio, it is usually made of nickel seven nitrogen. If you want to have a long service life, you can use the 2520 material... According to the temperature, the requirements are not high. The use temperature is as high as 950 ℃, and the chrome manganese nitrogen (ZG30Cr18Mn12Si2N) material can be used. The chrome manganese nitrogen material has good high temperature strength and thermal fatigue resistance. The furnace bottom plate shall be made of nickel heptane nitrogen (ZG35Cr24Ni7SiN) when the operating temperature is below 1050 ℃. If it is an experimental electric furnace, the workpiece is relatively small, and the siliceous furnace floor can be used. The siliceous furnace floor can withstand the high temperature of 1400 ℃.

Advantages of Heat Resistant Steel Castings
Why to produce heat-resistant steel castings? Because steel castings have higher strength, plasticity and toughness than iron castings, some steel castings also have good weldability. Some special properties can also be obtained by adding some alloy elements to the steel castings. Therefore, steel castings play an irreplaceable role in large stress and impact and special occasions. Especially, it is widely used in machinery manufacturing, metallurgy and chemical industry, transportation, aerospace, aviation and other sectors.